Answer:
Referencial Integrity Contraint
Explanation:
The referential integrity constraint states that the customer ID i.e (CustID) in the Order table must match a valid CustID in the Customer table. Most relational databases have declarative referential integrity. That is to say, when the tables are created the referential integrity constraints are set up so as to maintain the quality of information.
Yeah youre right because thats how the website works??
Because infrared telescopes use infrared aka anything above absolute zero (0 degrees Celsius or 32 degrees Fahrenheit) meaning that the telescope would not only pick up the stars but also all of the people and lights so on and so forth
Real time system means that the system is subjected to real time, i.e., response should be guaranteed within a specified timing constraint or system should meet the specified deadline. For example: flight control system, real time monitors etc.
